1040921398 has 16 divisors (see below), whose sum is σ = 1703991744. Its totient is φ = 472961160.

The previous prime is 1040921393. The next prime is 1040921411. The reversal of 1040921398 is 8931290401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040921393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59761 + ... + 75187.

It is an arithmetic number, because the mean of its divisors is an integer number (106499484).

Almost surely, 2^1040921398 is an apocalyptic number.

1040921398 is a deficient number, since it is larger than the sum of its proper divisors (663070346).

1040921398 is a wasteful number, since it uses less digits than its factorization.

1040921398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18507.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1040921398 is about 32263.3135000111. The cubic root of 1040921398 is about 1013.4585216074.

The spelling of 1040921398 in words is "one billion, forty million, nine hundred twenty-one thousand, three hundred ninety-eight".